U know it's not hard to make proper mashed potatoes at home right?

Just use good butter and nice russet potatoes

if you mash is good enough, you really don't need gravy. KFC mash is so bad that without the gravy you cant eat the mash which is made from powdered potato and taste funny.

But if you must, can just use instant gravy. I just use drippings from my grilled chicken.